Acanthodoris pilosa (Abildgaard in Müller, 1789)

17 February, 2013.
Lephinchapel, Loch Fyne on the west coast.
4 mm juvenile animal at 9 metres in 7° C water.
Sony NEX-5 in Nauticam housing, 18-55mm lens, SubSee +10 dioptre and 2 x Inon D-2000 flashes.

for more information about this species go to one of the links below
OPK - Opistobranquis nudibranchs of the british isles sea slug forum